Library Architecture

On the right, Yale University’s orig­i­nal neo-Gothic Art Gallery, built in 1928. On the left, Louis Kahn’s min­i­mal­ist addition, built just 25 years later. (The sus­pi­ciously ornamental-looking hor­i­zon­tal lines are per­mit­ted because they “express” the struc­ture within: in this case, the lo­ca­tion of the floors inside.)